(1) Department of Physics, University of Maryland, Baltimore County, Baltimore, MA 21250, USA;(2) Dipartimento Interateneo di Fisica, Universita' di Bari, 70126 Bari, Italy
Abstract:
We report on a delayed-choice quantum eraser experiment
based on a two-photon imaging scheme using entangled photon pairs.
After the detection of a photon which passed through a
double-slit, a random delayed choice is made to erase or not erase
the which-path information by the measurement of its distant
entangled twin; the particle-like and wave-like behavior of the
photon are then recorded simultaneously and respectively by only
one set of joint detection devices. The present eraser takes
advantage of two-photon imaging. The complete which-path
information of a photon is transferred to its distant entangled
twin through a “ghost" image. The choice is made on the Fourier
transform plane of the ghost image between reading “complete
information" or “partial information" of the double-path.